Have you just downloaded a work PDF and suddenly found the file has the extension of a text file (TXT) or even no extension ...

Associating a file type with a program can be done in several ways, such as using the Open with dialog and selecting the Always use this app to open checkbox, or via Default Programs or Default Apps.

On Windows 11, you can change the format of virtually any file, but the operating system doesn't make it easy for most users. As such, in this guide, I will explain how to complete this configuration.